Optical information-recording medium and optical information-recording method

An information-recording medium comprising a substrate having thereon a recording layer capable of recording information with laser light, said recording layer containing:

• at least one compound selected from the group consisting of compounds represented by the following general formulae (I-1), (I-2), (I-3) and (I-4);
• and an organic dye other than said compounds:
• wherein A1, A2, B1 and B2 each independently represents a substituent;
• Y1 and Z1 each independently represents an atomic group necessary to form a carbocyclic or heterocyclic ring;
• E and G each independently represents an atomic group necessary to complete a conjugated double bond chain;
• X1 represents ═O, ═NR or ═C(CN)2;
• X2 represents —O, —NR or —C(CN)2 (wherein R represents a substituent);
• L1, L2, L3, L4 and L5 each independently represents a methine group which may be substituted;
• m and n each independently represents 0, 1 or 2;
• x and y each independently represents 0 or 1;
• and K represents an integer needed to neutralize the charge of the counter cation;
• R1, R2, R3, R4, R5, R6, R7 and R8 each independently represents a hydrogen atom or a substituent (wherein each pair of R1 and R2, R3 and R4, R5 and R6, and R7 and R8 may combine with each other to form a heterocyclic ring together with the nitrogen atom);
• R9, R10, R11, R12 and R13 each independently represents a substituent;
• p represents 1 or 2;
• and q and r each independently represents an integer of 0 to 4, and wherein said organic dye is an oxonol dye, and said oxonol dye is represented by the following general formula (II),
• wherein R1, R2, R3 and R4 each independently represents a hydrogen atom, an alkyl group, and aryl group, and aralkyl group or a heterocyclic group;
• L1, L1 and L3 each independently represents a methine group which may be substituted;
• m represents 0, 1, 2 or 3;
• and Xk+represents a cation wherein k represents an integer of 1 to 10.